*
*/
-#include <linux/acpi.h>
-#include <linux/pnp.h>
#include "linux/string.h"
#include "linux/bitops.h"
#include "drmP.h"
* to match what the GPU expects.
*/
-#define MCHBAR_I915 0x44
-#define MCHBAR_I965 0x48
-#define MCHBAR_SIZE (4*4096)
-
-#define DEVEN_REG 0x54
-#define DEVEN_MCHBAR_EN (1 << 28)
-
-/* Allocate space for the MCH regs if needed, return nonzero on error */
-static int
-intel_alloc_mchbar_resource(struct drm_device *dev)
-{
- struct pci_dev *bridge_dev;
- drm_i915_private_t *dev_priv = dev->dev_private;
- int reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
- u32 temp_lo, temp_hi = 0;
- u64 mchbar_addr;
- int ret = 0;
-
- bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0));
- if (!bridge_dev) {
- DRM_DEBUG("no bridge dev?!\n");
- ret = -ENODEV;
- goto out;
- }
-
- if (IS_I965G(dev))
- pci_read_config_dword(bridge_dev, reg + 4, &temp_hi);
- pci_read_config_dword(bridge_dev, reg, &temp_lo);
- mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
-
- /* If ACPI doesn't have it, assume we need to allocate it ourselves */
- if (mchbar_addr &&
- pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE)) {
- ret = 0;
- goto out_put;
- }
-
- /* Get some space for it */
- ret = pci_bus_alloc_resource(bridge_dev->bus, &dev_priv->mch_res,
- MCHBAR_SIZE, MCHBAR_SIZE,
- PCIBIOS_MIN_MEM,
- 0, pcibios_align_resource,
- bridge_dev);
- if (ret) {
- DRM_DEBUG("failed bus alloc: %d\n", ret);
- dev_priv->mch_res.start = 0;
- goto out_put;
- }
-
- if (IS_I965G(dev))
- pci_write_config_dword(bridge_dev, reg + 4,
- upper_32_bits(dev_priv->mch_res.start));
-
- pci_write_config_dword(bridge_dev, reg,
- lower_32_bits(dev_priv->mch_res.start));
-out_put:
- pci_dev_put(bridge_dev);
-out:
- return ret;
-}
-
-/* Setup MCHBAR if possible, return true if we should disable it again */
-static bool
-intel_setup_mchbar(struct drm_device *dev)
-{
- struct pci_dev *bridge_dev;
- int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
- u32 temp;
- bool need_disable = false, enabled;
-
- bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0));
- if (!bridge_dev) {
- DRM_DEBUG("no bridge dev?!\n");
- goto out;
- }
-
- if (IS_I915G(dev) || IS_I915GM(dev)) {
- pci_read_config_dword(bridge_dev, DEVEN_REG, &temp);
- enabled = !!(temp & DEVEN_MCHBAR_EN);
- } else {
- pci_read_config_dword(bridge_dev, mchbar_reg, &temp);
- enabled = temp & 1;
- }
-
- /* If it's already enabled, don't have to do anything */
- if (enabled)
- goto out_put;
-
- if (intel_alloc_mchbar_resource(dev))
- goto out_put;
-
- need_disable = true;
-
- /* Space is allocated or reserved, so enable it. */
- if (IS_I915G(dev) || IS_I915GM(dev)) {
- pci_write_config_dword(bridge_dev, DEVEN_REG,
- temp | DEVEN_MCHBAR_EN);
- } else {
- pci_read_config_dword(bridge_dev, mchbar_reg, &temp);
- pci_write_config_dword(bridge_dev, mchbar_reg, temp | 1);
- }
-out_put:
- pci_dev_put(bridge_dev);
-out:
- return need_disable;
-}
-
-static void
-intel_teardown_mchbar(struct drm_device *dev, bool disable)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct pci_dev *bridge_dev;
- int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
- u32 temp;
-
- bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0));
- if (!bridge_dev) {
- DRM_DEBUG("no bridge dev?!\n");
- return;
- }
-
- if (disable) {
- if (IS_I915G(dev) || IS_I915GM(dev)) {
- pci_read_config_dword(bridge_dev, DEVEN_REG, &temp);
- temp &= ~DEVEN_MCHBAR_EN;
- pci_write_config_dword(bridge_dev, DEVEN_REG, temp);
- } else {
- pci_read_config_dword(bridge_dev, mchbar_reg, &temp);
- temp &= ~1;
- pci_write_config_dword(bridge_dev, mchbar_reg, temp);
- }
- }
-
- if (dev_priv->mch_res.start)
- release_resource(&dev_priv->mch_res);
-}
-
/**
* Detects bit 6 swizzling of address lookup between IGD access and CPU
* access through main memory.
drm_i915_private_t *dev_priv = dev->dev_private;
uint32_t swizzle_x = I915_BIT_6_SWIZZLE_UNKNOWN;
uint32_t swizzle_y = I915_BIT_6_SWIZZLE_UNKNOWN;
- bool need_disable;
- if (!IS_I9XX(dev)) {
+ if (IS_IRONLAKE(dev) || IS_GEN6(dev)) {
+ /* On Ironlake whatever DRAM config, GPU always do
+ * same swizzling setup.
+ */
+ swizzle_x = I915_BIT_6_SWIZZLE_9_10;
+ swizzle_y = I915_BIT_6_SWIZZLE_9;
+ } else if (!IS_I9XX(dev)) {
/* As far as we know, the 865 doesn't have these bit 6
* swizzling issues.
*/
} else if (IS_MOBILE(dev)) {
uint32_t dcc;
- /* Try to make sure MCHBAR is enabled before poking at it */
- need_disable = intel_setup_mchbar(dev);
-
/* On mobile 9xx chipsets, channel interleave by the CPU is
* determined by DCC. For single-channel, neither the CPU
* nor the GPU do swizzling. For dual channel interleaved,
swizzle_x = I915_BIT_6_SWIZZLE_UNKNOWN;
swizzle_y = I915_BIT_6_SWIZZLE_UNKNOWN;
}
-
- intel_teardown_mchbar(dev, need_disable);
} else {
/* The 965, G33, and newer, have a very flexible memory
* configuration. It will enable dual-channel mode
}
}
- /* FIXME: check with memory config on IGDNG */
- if (IS_IGDNG(dev)) {
- DRM_ERROR("disable tiling on IGDNG...\n");
- swizzle_x = I915_BIT_6_SWIZZLE_UNKNOWN;
- swizzle_y = I915_BIT_6_SWIZZLE_UNKNOWN;
- }
-
dev_priv->mm.bit_6_swizzle_x = swizzle_x;
dev_priv->mm.bit_6_swizzle_y = swizzle_y;
}
-
-/**
- * Returns the size of the fence for a tiled object of the given size.
- */
-static int
-i915_get_fence_size(struct drm_device *dev, int size)
-{
- int i;
- int start;
-
- if (IS_I965G(dev)) {
- /* The 965 can have fences at any page boundary. */
- return ALIGN(size, 4096);
- } else {
- /* Align the size to a power of two greater than the smallest
- * fence size.
- */
- if (IS_I9XX(dev))
- start = 1024 * 1024;
- else
- start = 512 * 1024;
-
- for (i = start; i < size; i <<= 1)
- ;
-
- return i;
- }
-}
-
/* Check pitch constriants for all chips & tiling formats */
-static bool
+bool
i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode)
{
int tile_width;
* reg, so dont bother to check the size */
if (stride / 128 > I965_FENCE_MAX_PITCH_VAL)
return false;
- } else if (IS_I9XX(dev)) {
- uint32_t pitch_val = ffs(stride / tile_width) - 1;
-
- /* XXX: For Y tiling, FENCE_MAX_PITCH_VAL is actually 6 (8KB)
- * instead of 4 (2KB) on 945s.
- */
- if (pitch_val > I915_FENCE_MAX_PITCH_VAL ||
- size > (I830_FENCE_MAX_SIZE_VAL << 20))
+ } else if (IS_GEN3(dev) || IS_GEN2(dev)) {
+ if (stride > 8192)
return false;
- } else {
- uint32_t pitch_val = ffs(stride / tile_width) - 1;
- if (pitch_val > I830_FENCE_MAX_PITCH_VAL ||
- size > (I830_FENCE_MAX_SIZE_VAL << 19))
- return false;
+ if (IS_GEN3(dev)) {
+ if (size > I830_FENCE_MAX_SIZE_VAL << 20)
+ return false;
+ } else {
+ if (size > I830_FENCE_MAX_SIZE_VAL << 19)
+ return false;
+ }
}
/* 965+ just needs multiples of tile width */
if (stride & (stride - 1))
return false;
- /* We don't handle the aperture area covered by the fence being bigger
- * than the object size.
- */
- if (i915_get_fence_size(dev, size) != size)
- return false;
+ return true;
+}
+
+bool
+i915_gem_object_fence_offset_ok(struct drm_gem_object *obj, int tiling_mode)
+{
+ struct drm_device *dev = obj->dev;
+ struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
+
+ if (obj_priv->gtt_space == NULL)
+ return true;
+
+ if (tiling_mode == I915_TILING_NONE)
+ return true;
+
+ if (!IS_I965G(dev)) {
+ if (obj_priv->gtt_offset & (obj->size - 1))
+ return false;
+ if (IS_I9XX(dev)) {
+ if (obj_priv->gtt_offset & ~I915_FENCE_START_MASK)
+ return false;
+ } else {
+ if (obj_priv->gtt_offset & ~I830_FENCE_START_MASK)
+ return false;
+ }
+ }
return true;
}
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_gem_object *obj;
struct drm_i915_gem_object *obj_priv;
+ int ret = 0;
obj = drm_gem_object_lookup(dev, file_priv, args->handle);
if (obj == NULL)
return -EINVAL;
- obj_priv = obj->driver_private;
+ obj_priv = to_intel_bo(obj);
if (!i915_tiling_ok(dev, args->stride, obj->size, args->tiling_mode)) {
- drm_gem_object_unreference(obj);
+ drm_gem_object_unreference_unlocked(obj);
return -EINVAL;
}
- mutex_lock(&dev->struct_mutex);
-
if (args->tiling_mode == I915_TILING_NONE) {
args->swizzle_mode = I915_BIT_6_SWIZZLE_NONE;
+ args->stride = 0;
} else {
if (args->tiling_mode == I915_TILING_X)
args->swizzle_mode = dev_priv->mm.bit_6_swizzle_x;
if (args->swizzle_mode == I915_BIT_6_SWIZZLE_UNKNOWN) {
args->tiling_mode = I915_TILING_NONE;
args->swizzle_mode = I915_BIT_6_SWIZZLE_NONE;
+ args->stride = 0;
}
}
- if (args->tiling_mode != obj_priv->tiling_mode) {
- int ret;
- /* Unbind the object, as switching tiling means we're
- * switching the cache organization due to fencing, probably.
+ mutex_lock(&dev->struct_mutex);
+ if (args->tiling_mode != obj_priv->tiling_mode ||
+ args->stride != obj_priv->stride) {
+ /* We need to rebind the object if its current allocation
+ * no longer meets the alignment restrictions for its new
+ * tiling mode. Otherwise we can just leave it alone, but
+ * need to ensure that any fence register is cleared.
*/
- ret = i915_gem_object_unbind(obj);
+ if (!i915_gem_object_fence_offset_ok(obj, args->tiling_mode))
+ ret = i915_gem_object_unbind(obj);
+ else if (obj_priv->fence_reg != I915_FENCE_REG_NONE)
+ ret = i915_gem_object_put_fence_reg(obj);
+ else
+ i915_gem_release_mmap(obj);
+
if (ret != 0) {
WARN(ret != -ERESTARTSYS,
- "failed to unbind object for tiling switch");
+ "failed to reset object for tiling switch");
args->tiling_mode = obj_priv->tiling_mode;
- mutex_unlock(&dev->struct_mutex);
- drm_gem_object_unreference(obj);
-
- return ret;
+ args->stride = obj_priv->stride;
+ goto err;
}
+
obj_priv->tiling_mode = args->tiling_mode;
+ obj_priv->stride = args->stride;
}
- obj_priv->stride = args->stride;
-
+err:
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);
- return 0;
+ return ret;
}
/**
obj = drm_gem_object_lookup(dev, file_priv, args->handle);
if (obj == NULL)
return -EINVAL;
- obj_priv = obj->driver_private;
+ obj_priv = to_intel_bo(obj);
mutex_lock(&dev->struct_mutex);
{
struct drm_device *dev = obj->dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = obj->driver_private;
+ struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
int page_count = obj->size >> PAGE_SHIFT;
int i;
{
struct drm_device *dev = obj->dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = obj->driver_private;
+ struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
int page_count = obj->size >> PAGE_SHIFT;
int i;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff